Oracle日常操作小常识(持续更新)
如何查看各个表空间占用磁盘情况?
SQL> col tablespace format a20 SQL> select b.file_id 文件ID号, b.tablespace_name 表空间名, b.bytes 字节数, (b.bytes-sum(nvl(a.bytes,0))) 已使用, sum(nvl(a.bytes,0)) 剩余空间, sum(nvl(a.bytes,0))/(b.bytes)*100 剩余百分比 from dba_free_space a,dba_data_files b where a.file_id=b.file_id group by b.tablespace_name,b.file_id,b.bytes order by b.file_id
查看本用户下的各种对象的SQL脚本 表:
select * from cat; select * from tab; select table_name from user_tables;
视图: select text from user_views where view_name=upper('&view_name');
索引: select index_name,table_owner,table_name,tablespace_name,status from user_indexes order by table_name;
触发器: select trigger_name,trigger_type,table_owner,table_name,status from user_triggers;
快照: select owner,name,master,table_name,last_refresh,next from user_snapshots order by owner,next;
同义词: select * from syn;
序列: select * from seq;
数据库链路: select * from user_db_links;
约束限制: select TABLE_NAME,CONSTRAINT_NAME,SEARCH_CONDITION,STATUS from user_constraints;
本用户读取其他用户对象的权限: select * from user_tab_privs;
本用户所拥有的系统权限: select * from user_sys_privs;
用户: select * from all_users order by user_id;
表空间剩余自由空间情况: select tablespace_name,sum(bytes)
总字节数,max(bytes),count(*) from dba_free_space group by tablespace_name;
数据字典: select table_name from dict order by table_name;
锁及资源信息: select * from v$lock;
不包括DDL锁
数据库字符集: select name,value$ from props$ where name='NLS_CHARACTERSET';
inin.ora参数: select name,value from v$parameter order by name;
SQL共享池: select sql_text from v$sqlarea;
数据库: select * from v$database
控制文件: select * from V$controlfile;
重做日志文件信息: select * from V$logfile;
来自控制文件中的日志文件信息: select * from V$log;
来自控制文件中的数据文件信息: select * from V$datafile;
NLS参数当前值: select * from V$nls_parameters;
ORACLE版本信息: select * from v$version;
描述后台进程: select * from v$bgprocess;
查看版本信息: select * from product_component_version;
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